diff --git a/Gemfile.lock b/Gemfile.lock
index 48fd854..5b69c99 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,7 +7,7 @@ GEM
     nokogiri (1.6.6.2)
       mini_portile (~> 0.6.0)
     power_assert (0.2.7)
-    rake (10.4.2)
+    rake (12.3.3)
     rdoc (4.2.0)
       json (~> 1.4)
     test-unit (3.1.8)